Product DescriptionSpecifications: Material: automotive grade plastic Operating temperature: -15 to 100 Deg Celsius SSID: WiFiOBD Port: 35000 Range: 50 ft (Line of sight) Antenna: Internal Power Consumption: 0.75 Watts (With Power Switch) Wifi Standard: 802.11a/b/g Item size: 9 * 5 * 3cm (3.5 * 2.0 * 1.2in) Item weight: 75g/2.6ozVehicle Speed:RPMFuel ConsumptionEngine Coolant TempFuel PressureCalculated Engine LoadThrottle PositionIntake Manifold PressureAir Intake TempTiming AdvanceMass Air FlowFuel LevelBarometric PressureEVAP System Vapor PressureFuel TrimWarm reminder! If you can't open the CD， please contact me via Contact the seller on Amazon page.Thank you. Software download Windows version: ScanMaster - ELM，， PCMSCAN， etc.; The IMAC version: OBD Car Doctor software ��for free�� The android version: Torque_Pro (free) The IOS version: E OBD2 (free)， DashCommand (to buy)How to read OBD fault code? 1) Shut down the engine， the ignition key in the off position. 2)Will a OBD scan tool (small handheld scanner， etc.) connected to the connector interfaces under the dashboard of your vehicle.(Bluetooth or WIFI OBD version please download the APP to use accordingly) 3)The position of the ignition key to start (don't have to start the engine). 4)Open the OBD scanner， read the fault code. 5)The ignition key back to the position， remove the reading code. 6)With manual query the cause of the problem (please note that this manual is for reference only)， and the corresponding maintenance.